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Rubidium Bromide
Crystal:
RbBrStructure: NaCl
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Lattice formation energy: |
-6.62 eV |
Lattice parameter: |
3.42 Å (3.410 at 0K.) |
Density: |
3.35 g/cm3 |
Stiffness constants
c11: 3.17 (Ref.1) or 3.863
c12: 0.42 or 0.474
c44: 0.39 or 0.4085
Compressibility (in 1011 dynes/cm2): 0.75 ??
Poisson ratio:
Debye temperature: 136 K
Melting temperature: K
Phonon spectrum discussed by:
S. Rolandson & G. Raunio, Lattice dynamics of RbBr, J. Phys. C4, 958 (1971)
Transverse optic phonon T0 (k=0): 94.5 cm-1 or 1.65*1013/sec.
Longitude optic phonon L0 (k=0): cm-1
Gruneissen constant:
Ratio e*/e: 0.82
Photoelastic constants:
p11:
p12:
p44:
Band gap:
direct: eV. at K
indirect: eV. at ° K
Plasmon energy: eV.
Exciton energy: 6.64 eV. (Ref.2)
Band structure:
Ultraviolet electron spectra of Rubidium halides, C.S. Inouye & W. Pong, Phys.Rev. B15, 2265 (1977)
Static dielectric constant: 5.0 or 4.51
Optic dielectric constant: 2.33 or 2.36
Electron mobility:
Hole mobility:
Polaron coupling constant:
Effective mass:
conduction band:
valence band:
Electron affinity: ( in eV., from bottom of conduction band under vacuum)
+0.67 (Ref.3)
3.56 (Ref.4) (estimation)
Spin-orbit coupling: 0.48 ( valence band) (Ref.5)
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References:
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